Power-transmission device.



D. K. WILSON.

POWER TRANSMISSION DEVICE.

APPLICATION FILED AUG. 26, 1910.

Patented Mar. 26, 1912.

6 SHEETS-SHEET 1.

Inventor. ".z-jfiwzllson.

I witnesses:

fizz/ .Attornzy.

D. K. WILSON.

POWER TRANSMISSION DEVICE.

APPLICATION FILED AUG. 26, 1910.

1,021,030. Patented Mar.26, 1912.

a SHEETS-SHEET a.

" D. K. WILSON.

POWER TRANSMIQSION DEVICE. APPLICATION FILED we. 26, 1910.

Patented Mar. 26, 1912.

' 6 SHEETS-SHEET 8.

Caitnesssx Inventor,

I 6y k g Attornzy.

D. K. WILSON.

, POWER TRANSMISSION DEVICE.

APPLICATION FILED we. 26, 1910.

1,02 1 ,030. Patented Mar. 26, 1912.

5 SHEETS-SHEET 4.

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Attorn zg D. K. WILSON.

POWER TRANSMISSION nnvwrz.

' APPLICATION FILED AUG. 26, 1910. 1,021,030. Patented Mar. 26, 1912.

5 SHEETS-SHBBT 6.

Inventor; .D. )f. Wi Z60 n 44 6y I Attornzy,

UNI ED STATES liriTENT OFFICE.

DALTQN K. WIISON, WATERLOO, IOWA, ASSIGNOB T WILLIAM GALLOWAY COMPANY,OF WATERLOO, IOWA.

' POWER-TRANSMISSION DEVICE.

Specification of Letters Patent.

Patented Mar. 26, 1912.

Application flied August 26, 1910. Serial No. 579,061.

Tolzl'l whom it may concern motor vehicle a positive change-speed andreversible transmission'device, which is con- 'venient, responsive andeflicient in use,'and

which is adapted for employment in either passenger orfreight-carryingmachines, but 1s also practical as a part of thedrlvingmechanism of implement tractors. This object I have accomplishedby the mechanism which is hereinafter described and claimed, and whichis illustrated in the accompanying drawings, in which:

1 Figure 1 is an upper plan v1ew of my power transmission device, partsbeing sectioned away. Fig. 2 is an enlarged longitudinal central axialsection of the frictiondrums. Fig. 3 is a transverse section of saiddevice taken along the line a-b of Fig. 2. Fig. 4 is a diagrammatic viewof the speed-changmg-cams and their connections to the band-brakes ofsaid friction-drums. Fig. 5 is a longitudinal central axial view of thefriction-drums of a power transmission device constructed according tothe principles of my invention but having but two forward changes ofspeed. Fig. 6 is a transverse section of the device shown in Fig. 5,taken along the line 0d thereof. Fig. 7 is a diagrammatic view of thechange-speed cams used in connection with the drums shown in Fig. 5.

Similiar characters of reference designate corresponding partsthroughout the several views.

Figs. 1 to 4 inclusive show the construction of my device when arrangedfor three changes of speed in forward movement, and is intendedespecially for use as a part of the driving mechanism of automobilesused for passenger or freight carrying, while the two-speed device shownin Figs. 5 to 7 in- I clusive is adapted for use in traction-engines ortractors. r

The side-bars 1 of the frame carry the bearings 101, 102, 103,104 and105 in which are respectively mounted the ends of the shafts 2, 3, 4, 5and 6, all said shafts being rotatable except the shaft 5 which is fixedin its bearings. The ends of the shaft 6 are incased insleeves 7 and 8placed oppositely, seated in said bearings 105, and said shaft andsleeves are relatively movable.

The shaft 4 carries two sprocket-wheels 35 and 37, of which the wheel 37is driven by a sprocket-chain (not shown) driven by some suitable sourceof power. A sprocketchain 36 is seated about the other sprocketwheel 35and also about a sprocket-rim 50,

the latter forming one of the elements of the planetary gearing mountedupon and surrounding the sha t 6, and which are adapted to cotiperate todrive said shaft in a manner to be hereinafter fully described. Thesleeve 7 has no other function than to incase .the right-hand. end ofthe shaft 6, and does not project outwardly from the right-hand bearing105 as does the inclosed end of said shaft. The right-hand projectingend of the shaft 6 may have a carryingwheel directly secured'upon it.The left. hand sleeve 8, however, does project to the left of theleft-hand bearing- 105, and is adapted to have the left-handcarryingwheel secured to it. tends from hearing to bearing, while adifferential gearing drives the shaft andthe sleeve 8 in a Well-knownway.

The differential-gearing may be as shown, and composed of the opposedbevel-gearwheels 57 and 59 having a plurality of intermediately locatedbevel-pinions, such as are shown at 55, 56 and 61 intermeshed with both.The gear-wheel 59 is secured to the sleeve 8 by machine-screws 60, andis rotatable about the shaft 6 withsaid sleeve, while the gear-wheel 57is fixedly secured to said sha t 6 by means of a key 58, and rotateswith said shaft. The pinions are rotatable on studs 54, the latterextending from inner seats, and received in bearingopenings in acylinder 53,'the latter having itsinner end closed by a disk 52concentrically mounted on theshaft 6, rotatably. The disk 52 has on itsright-hand face a number of stud-pivot-shafts 80 upon which arerotatably mounted the gear-Wheels 78, the latter having projected fromtheir righthand sides integral pinions 79. 'Abutments 7 3 are secured tothe right-hand face of the disk 52 by means of screws 63, said abutmentshaving projections 74 which extend over the edges of the rings 51, tohold the latter in position concentrically about the outer edge of saiddisk. The sprocket-rim 50 is secured to the right-hand face of the ring51 by means of screws 62. The inner edge of the rim 50 has internal-gearteeth 81 which are in meslfwith the teeth of the gear-wheels 78. Afriction-drumv 13 is seated about said shaft 6 immediately to the rightof the rim 50 and bears against the latter, and has an inwardly-directedflange to which a gear-rim 75 is secured by means of screws 76. Theinternally directed teeth of the rim 75 are enmeshed with the teeth ofthe pinions 79. A friction-drum 11 is seated immediately to the right ofthe friction-drum 13, and is carried by a sleeve 71, the latterextending to the left and having on its left-hand 'end a gear-wheel 72integral with it and whose teeth are intermeshed with the teeth of saidpinions 79. The sleeve71 is concentrically seated movably on a sleeve.85, the latter being concentrically and movably seated on the shaft 6,and said sleeve 85 has an integral gearwheel 84 on its left-hand end,whose teeth 'intermesh with the teeth of the surrounding gear-wheels 78.The right-hand end of the sleeve 85 carries the friction-drum 9, thelatter being located immediately to the right of the friction-drum 11,the drum being connected to said sleeve by means of the radial spokes70, the latter being so formed and arranged as to lie at theleft-hand'edge of said drum and project largely into the hollow of theadjacent drum 11. The spokes 70 are each radially slotted to provideseats for the levers 68, the latter being pivoted to said spokes at 69.Each lever 68 has an out- .wardly-directed friction head which is 10-cated adjacent to the inner face of the drum 11 and is adapted tofrictionally bear against said drum when the right-hand part of thelever is moved in a certain direction. The right-hand end of each lever68 is split or forked, and on apintle 67 connecting such forks oneend ofalink 22 is pivotally mounted, the bearing opening 66 in said link beingelongated to permit of some play between the parts. The other end ofeach link 22 is enlarged and squared to form a shoulder about it,a'coiled compression-spring 23 being seated about the link between theshoulder and the brake. The squared end of each link is pivoted on apintle 21 extending across the forks 24 projecting to the right from thecollar 18, the latter being slid ably seated on said shaft 6 andprovided with a peripheral groove 19 adapted to receive the prongs of ashifting-fork 20. The drum 13 as well as-the drum 11 are held in placeon the shaft 6, by means of a disk 65 seated on the'sleeve 71, andsecured to the.

abutment 73 by means of screws 64.

carry likewise the fork 20 and the collar 18 slidably along the sleeve 7without sidewise vibrations. 27 is a bar fixed at its outer end to theadjacent fra1ne-bar 1 by means of a bolt 28, said bar 27 having apivotal connection at its inner end with one end of a bellcrank lever.26, to provide a fulcrum for the latter. The other end of thelever 26is pivoted to one end of the shifting-rod 31, and said lever is alsomedially pivoted to said arm 25. l/Vhen the rod is moved back andforward it thereby shifts the collar 18 to and fro along the sleeve 7,causing the friction-heads 68 to engage or become disengaged froin theinner wall of the frictiondruni 11. t

Referring to Fig. 4, it will be seen that cams 42,43 and 44 are fixed tothe rockshaft 2. The cams 44, 43 and 42 are respectively'used in turn toregulate and vary the speed of the device, being adjusted respectivelyfor low, intermediate, and high speeds forward. Rock-levers 38, 39 and40 are mounted op ,,the shaft 3 to rock separately therefififHhd are inthe form of bell-cranks with bifurcated-upper and lower ends,antifriction rollers 41 and 86 being mounted in the said bifurcations.respectively on the cross-pintles 98 and 99 respectively. The angles ofthe rock-levers are turned forwardly so as tolocate the rollers 41 and86 so as to bear against the edges of said cams. The lower forks of saidbifurcations have at their ends the pintles 87 on which are pivotallymounted the forward ends of the shifting-rods 31, 32 and 33. Securedalso to the rock-shaft. 2 to the left hand of said cams is a sleeve 45having a projecting arm 46 extending upwardly, and also an arm 88extending downwardly. A cylindrical body 47 has its forward end pivotedat 100 to the lower end of the arm 88, said body being centrally andlongitudinally hollowed to receive movably the forward end of ashifting-rod 34. The said body has a-longitudinal slot49 along its upperside in communi- 'cation with the central hollow, and a pin 48 projectsupwardly from the rod 34 through said slot, and serves to limit the playof said rod within said hollow.

On the fixed shaft 5- are a plurality of rock-sleeves 17 which havespaced apart arms 106. These arms have pintles 107 and 92. On the pintle92 in each case is medially pivoted paired and connected bell-cranks 16,

33 or 34 has the effect of tightening the band-brakes in turn connectedthereto as desired. The effect of shifting forward the rod 31 is toslide the collar 18 toward the drum 9,

which causes the friction-heads 68 to engage the inner periphery of thedrum 11, causing the drums 9 and 11 to act as one.

When the band-brake 12 is tightened by reason of moving the hand-lever46 ahead to the first position ahead of the neutral positions of thecams, Fi 4 showing all of the cams in their neutra positions with theband-brakes loosened from the drums, the band-brake holds the drum 11still with its pinion 72. The sprocket-rim 50 is rotated in thedirection of the arrow shown in Fig. 3, and the included gearing acts tocommunicate a slow speed of rotation to the sleeve 8 and the shaft 6,which latter move together as one except when the carrying-wheels areeffecting a differential movement between such shaft and sleeve. Whenthe lever 46 is thrown forward to its second position, the Wiper 94 onthe cam 44 releases the roller and its lever 40 contacting therewith andthe brake 12 is loosened, the wiper 93 on the cam 43 then drawing backthe lever 39 and tightening the band-brake 10 on the frictlondrum 9.This holds still the pinion 84 of said drum, and the action of thegearing on the shaft is to increase its speed forward.

- When the lever 46 is shifted ahead one more position the wiper 93releases the lever 39, thus loosening the brake 10, while wiper 95 onthe cam 42 acts to move the lever 38 and draw upon the rod 31, thusshifting the collar 18 toward the adjacent drum 9, and.

the pin 48 on the rod 34, when said rod is also moved forward, whichcauses its connections to tighten the band-brake 14 upon the drum 13.The stopping of the drum obviously so varies the interaction of theinternal-gearing as to reverse the rotation of the shaft 6, and saidshaft is driven backward. The shifting forward of the lever 46 thenbrings all the cams to their neutral position as shown, and theband-brakes as well as the friction-heads 68 are loosened,

causing a cessation of rotation of-said shaft.

In Figs. 5, 6 and 7 are shown a power.

transmission device similar in form and principle to that describedabove, but being adaptedfor but two speeds forward, and intended for useon tractors. In this form of the device, the low and high speed cams 43and 42 act upon the band-brake 10 and the slide-collar 18 in a similarmanner to the first-mentioned device, the brake 1O acting on the drum83, and the friction-heads 68 upon.

both the drums 83 and 84 to hold them together. The band-brake 14reverses the device in a similar manner by acting alone on the drum 82,the latter being analogous to the drum 13.

The arrangement of internal-gearing is such as to act with ease andresponsively in practice.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is: 1. power transmission device, comprismg, incombination, a frame, a rotary shaft mounted in said frame, a diskmounted on said shaft, a s rocket-rim rotatably mounted about said disand having an internal-gear, a lurallty of gear-wheels arranged aboutsaid shaft and rotatably mounted on studshafts projecting from one faceof said disk and in mesh with said internal-gear of said sprocket-mm,each of said gear-wheels having an integral coaxial pinion rotatablewith it on the same stud-shaft, a hollow frictiondrum having an internalgear-wheel integral therewith and in mesh with said plurality ofpinions, a second hollow friction-drum hav- 1n an integral gear-wheel inmesh with said plurality of pinions, a third frictiondrum rotatablymounted on said shaft and having an integral pinion in mesh 'with saidpluralit of gear-wheels, friction-heads pivoted to t e thirdfriction-drum and engaging the inner periphery of said secondfriction-drum, means for shifting said friction-heads in and out offrictional contact with said second drum, a band-brake about each ofsaid first, second and third frictiondrums, and means for independentlytightening said band-brakes upon said drums.

2. A power transmission device, com rismg, in combination, a frame, arotary s aft mounted in said frame, a disk operatively mounted on saidshaft, a sprocket-rim rotatably mounted about said disk and havinganinternal-gear, a plurality of gear-wheels arranged about said shaftand rotatably mounted on stud-shafts projecting from one face of saiddisk andin mesh with said internal gear, each of said gear-wheels havingan integral coaxial pinion, and a pluralit of drums arrangedside-bv-side on said sha t rotatably, and respective y geared with saidplurality of gear-wheels and inions independently, a movable brake aapted to independently frictionally contact with the outer periphery ofeach of said drums, to separately stop the rotation of either asdesired, and a friction-head pivotally connected to one of said drumsand adapted to frictionally engage another of said drums to connect thetwo drums together.

3. A power transmission device, comprising, in combination, a frame, arotary shaft last-mentioned internal-gear wheel fixed when desired, agear-rim concentric with said first-mentioned shaft and rotatable aboutit and in mesh with said plurality of pinions, and means for holdingsaid last mentioned gear-rim fixed when desired.

4. A power transmission device, compris-- ing, in combination, a frame,a rotary shaft mounted in said frame,"a sprocketor gearrim rotatablymounted about and spaced away from said shaft concentrically, said rim'having an internal-gear, a plurality of gear-wheels rotatable on shafts,the latter fixed in relation to said first-mentioned shaft, and saidwheels having integral coaxial pinions, a gear-wheel rotatable on saidshaft and meshed with all of said plurality of gear-wheels, means forholding the lastmentioned gear-wheel fixed when desired, aninternal-gear wheel in mesh with said plurality of pinions, means forholding the last-mentioned internal-gear wheel fixed when desired, agear-rim concentric with said first-mentioned shaft and rotatable aboutit and in mesh with said plurality of pinions, means for -holding thelast-mentioned gear-rim fixed when desired, and intioned shaft, and saidwheels having integral coaxial pinions, a gear-wheel rotatable on saidshaft and meshed with said plurality of gear-wheels, means for holdingsaid last-mentioned gearwheel immovable when desired, an internal-gearwheel in mesh with said plurality of pinions, and means for holding saidinternal-gear wheel immovable when desired.

6. A power transmission device compris ing, in combination, a frame, arotary shaft mounted in said frame, a sprocket: or gearrim rotatablymounted about .and spaced away from said shaft concentricallyys aid rim,having internal-gear shafts, a plurality of gear-wheels rotatable onsaid shafts, the

latter fixed in relation to said first-mentioned shaft, and said wheelshaving coaxial 1n tegral pinions, a gear-wheel rotatable on said shaftand meshedwith said plurality of gear-wheels, means for holding saidlastmentioiled gear-wheel immovable when desired, an internal-gear wheelin mesh with said plurality of pinions, means for holding saidinternal-gear wheel immovablewhen desired, and means for independentllocking said gear-wheel which 'is in mesli with said plurality ofgear-wheels and said. internal-gear wheel which is in mesh with saidplurality ofpinions together.

Signed at Waterloo, Iowa, this 8th day of Aug. 1910. I

- DALTON K. WILSON.

\Vitnesses:

O. D. YOUNG,

" G. G. KENNEDY.

